/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.flowable.rest.form;

import org.flowable.common.engine.api.FlowableIllegalArgumentException;
import org.flowable.common.engine.api.FlowableObjectNotFoundException;
import org.flowable.engine.ProcessEngines;
import org.flowable.engine.form.AbstractFormType;
import org.flowable.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.flowable.engine.repository.ProcessDefinition;

/**
 * @author Joram Barrez
 */
public class ProcessDefinitionFormType extends AbstractFormType {

    private static final long serialVersionUID = 1L;

    public static final String TYPE_NAME = "processDefinition";

    @Override
    public String getName() {
        return TYPE_NAME;
    }

    @Override
    public Object convertFormValueToModelValue(String propertyValue) {
        if (propertyValue != null) {
            ProcessDefinition processDefinition = ProcessEngines.getDefaultProcessEngine().getRepositoryService().createProcessDefinitionQuery().processDefinitionId(propertyValue).singleResult();

            if (processDefinition == null) {
                throw new FlowableObjectNotFoundException("Process definition with id " + propertyValue + " does not exist", ProcessDefinitionEntity.class);
            }

            return processDefinition;
        }
        return null;
    }

    @Override
    public String convertModelValueToFormValue(Object modelValue) {
        if (modelValue == null) {
            return null;
        }
        if (!(modelValue instanceof ProcessDefinition)) {
            throw new FlowableIllegalArgumentException("This form type only support process definitions, but is " + modelValue.getClass());
        }
        return ((ProcessDefinition) modelValue).getId();
    }
}
